Furnace.



T. S. BLAIR, Jn. FURNAGE.

APPLICATION FILED 113.15, 1909.

927,098. j 'Fatemi July 6,1909.

\ ZBBEETE-SHEET 1.

fw E

T. S. BLAIR, JR.

FURNAOE.

APPLICATION FILED PEB. 15, 1909.

Patented July 6, 1909.

2 SHEETS-SHEET 2.

ATENT OFFICE.

THOMAS S. BLAIR, i,

OF ELMHURST, ILLINOIS,

To all whom it 'may concern:

Be it known that I, TuoMAs S. BLAIR, Jr., a citizen of the United States, residing at Elmhurst, inthe county of .Dupage and State of Illinois, have invented a new and useful Improvement in Furnaces, of which vthe following is a specication.

My invention relates to an improvement on the feature of Letters Patent No. 869,616,

granted to ine October 29, 1907, for an iinprovenient in furnaces, which consists of a hollow inetal hood covering the port in a reverberatogry regenerative furnace, and ineans for circulating water through the hood to keep it cool.

'The primary object of my present invention is to provide, for circulating the coolingwater through the hood, a combination of located therein.

parte dif'lering frointhe particular coinbination thereof shown in the aforesaid patent, comprising a, plurality of Water-conducting pipes extending within. the hood v.troni its outer end and discharging therein at its inner end; and iny improvement consists in leading one or incre pipes extraneously of the hood, or hollow inetal body, to discharge the cooling-medium into the saine at its iiiner-end portion, thus directly to the part .which is subjected to the greatest intensity of heat in thefurnace, from which to circulate it 'through the hood to an outlet suitably In the accompanying drawings, Figure l is a broken longitudinal vertical section showing one ci tivo siinila r port-containing end-V portio ot a rerewrberatory regenerative iurnace equipped witlijrnl liuiprovenieiitg Fig. a section on line 2, Fig. l, and Fig. is a vieiv iilie that presented in Fig. 2, but showing a slight modification.

Qin each end oli' the chrunber 4 ci the furnace, ythe gesport 5 is covered by a hollow inetal body extending over it from the endwall 7'-, and preferably through. the latter, as shown, above a recess 8 in its lront face, which is covered by a iiietal water-back 9 having a water-discharge pipe 1G leading from its lower end, and through which and vthe wall a manhole 11, provided with a re inovable cover 12, is shown to be formed. The hollow metal body 6 shown in its preferred forni oi a hood of the shape illustrated, and is constructed of plateanetal, or it may be a casting of suitable inetal; and it pro jects incliuedly into the furnace, wherein its inner-eiid`fportion is supported by the Walltion of Letters Patent.

' .rebruary 15, 1909. serial No. 478,031.

Patented July 6, 1909.

sections 18. As I construct the hood, ol

end-section 14 riveted in place between a top-section 15 and a bottom-section 16 having a return-bend at its inner end, the extremity of which is deilected to overlap the inner end of the top-section, where the .parts thereby forming a joint 17. quires protection, and to that end it is cov'- ered with suitable insulating material 1S, preferably a hardened inass of ground inagnesite, which may be extended, as shown, to cover the entire top surface of the hood with the advantage oi insulating it from the heat, especially in the return-flow of the'hot gases through the port, and thereby saving in the quantity' of Water required for keeping the hood cool. s s

The cooling-water is led to the hood from a suitable source of supply (not shown) through pipes i9, 19, penetrating the Wallstructure of the furnace to extend, as shown in Fig. 2, along theoppositesides of the hood, or they may extend at any suitable angles to the hood, as at the right-angle representation in Fig. 3, in any case to beextraneous thereol and discharge 'into it at 0i' near its inner-end portion, thus directly intothe part of the hood which is subjected to the greatest intensity of heat. It desired, a single pipe 19 el suitable diameter, instead of two or more pipes, niay be used to direct the water into the hood in a manner to cause its How through the saine and discharge through an outletpipo El), provided in its rear end, or at any suitable point, for keeping the hood cool and thereby preserving it against rapid destruction under the great heat to which its use subjects it.

As in iny said former patent, thclisoharge of. the cooling-water from the hood is directed through the pipe`20 upon a metal back or bulli-head with which each end of the furnace is equipped, to preserve it against rapid destruction by keeping it cool, though if the water be not used for thatpurpose it may be caused to discharge to any other suitable oint, as to a, sewer. The forin of the met; back herein shown is a modifie: tion of the one shown and described in my aforesaid patent, being that which I have ad,V ted and applied to use, by way of prefer ence, as a covering for the outer surface of the recessed portion of the port-wall or end- Wall, 7, thus/leaving the end-Wall in place, since it' saveslin the quantity of Water reriveted boiler-plates, it is formed of a llangod are riveted together, as represented in Fig. l, This lioiut iteouh-ed l'or exerting it` eooling nii-pose upon tluport l. Moreover, thel hox-like torni of the present motel lmeli dispenses with the l'rougrhfy :rnd shelves projectingT from the outer idee oll the metal portewxtli, Shown in the nl'oreszrid. partent, lor harming the ilovv oi v-.z-rtel upon the well, :rnd thus zrliords :L Innlerinllly greater hond. vfor the flow at the disi-,lmrge-pipe ll), thereh)v adopting' it to be used to xnueh greater advantage in [lowingl it, lor itsl eenlingr l'unetion ns well :is its coolin;V inlluenee, upon ztppanotus for reversing the direrton ot the gus :ind zur, which is not herein. shown hut is eornnmnly employed in the present type ot 'iiirnoee, oeeupying n plone helow that in which the pipe l0 eX- tends.

Whitt i elimini its new and desire to secure by Letters Patent iS--- l. in o,- reverbemtory regenerative furnzire, the combination with n girls-porn oi :i hollow 'metall body projeetii'ig into the iurniree l'rom its end-well to cover the gesport :md provided with un outlet, and :L pipix extrz'uuous oll Saud hotly directly delivering und llo\\'inf,;` through sind body o., eooling-ine(liuin, lor the purpose eet l'o'rth.

2. in :t 'reverherzttory regenerative fur nime, the eomhinetion with e res-port, ot a hollow motel hody projecting into the 'urnuee from .its endnvztll to cover the ges-port :rnd provided with :Ln outlet, :uid it pipe leeding extrnueously ol' seid hody'into its innerend, portion to dirent thereto and (low through sind body L eoolingmiediuni, for the Vpurpose Het forth.

f5. 'in il, re\f*erln\,rntory regenerative l`urnai/ee, the eo'inhinntion with zt newport, oi :t hollow inetnl hood. proieeting;y into the l'urnaine from. its end--wnll to cover the gun-port und provided with ma outlet in ilerinrrwnll portion, and e witter-pipe lending extranoousl'jv of said hood direc-tl;T to its inner-end portion to ilow witter thenee through the hood, for the purpose set orth.

Lt. in e reverheretory regenerative fur nace, the eoznhinntioin with e gas-port, of e, hollow inetel hood proieeting into the furnzuf-e from its end-well to oever the ges-port and provided with en outlet, :ind Weterpipes lending' lengthwise along the hood extroneously thereof :ind connecting' with its inner-end portion to diselmrge therein :1nd flow witter tlnougl'i. the hood, i'or the purpose set forth.

In e reverheretory regenerative iurnnee, the eoinliirnttion with :1, ges-port, of' e hollow metal hood projecting into the iurimee from ite` end-well to cover the ges-port end provided with iin-outlet, seid hood being Composed ol1 united sections :rnd having n joint on its upper side, insulating nntteriel on the upper side oi' the hood covering Suid joint, mid :t pipe lending` into the inner-end portion of the hood to llow water thence through it, for the purpose set forth.

(i. in e rin'erherntory regenerative iurn:ue,the` en )lnhinetion with :t ges-port, oi' n, hollow metal hood projecting into the furnnee from its end-Woll to Cover the 'gnsfport und provided with :in outlet, said hood being.'

Composed oi united :sections end having at' -ioin t on its 'upper side, insulating nnrteriztl on the upper sido ot the hood covering seid joint, sind n, pipe len-ding extrzineously ol' the hood to its inner-end portion to :l'low witter thence through it, for the purpose set forth.

THOMAS S. BLAL JR.

ir presence ot'- (Wms. flC. Gn'froep, il. (l. ,luoimnn 

